FR2496908B1 - - Google Patents

Info

Publication number
FR2496908B1
FR2496908B1 FR8123776A FR8123776A FR2496908B1 FR 2496908 B1 FR2496908 B1 FR 2496908B1 FR 8123776 A FR8123776 A FR 8123776A FR 8123776 A FR8123776 A FR 8123776A FR 2496908 B1 FR2496908 B1 FR 2496908B1
Authority
FR
France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR8123776A
Other languages
French (fr)
Other versions
FR2496908A1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polaroid Corp
Original Assignee
Polaroid Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Polaroid Corp filed Critical Polaroid Corp
Publication of FR2496908A1 publication Critical patent/FR2496908A1/en
Application granted granted Critical
Publication of FR2496908B1 publication Critical patent/FR2496908B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/091—Digital circuits
    • G03B7/093—Digital circuits for control of exposure time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Shutters For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)
FR8123776A 1980-12-19 1981-12-18 PHOTOGRAPHIC CAMERA PROVIDED WITH EXPOSURE CONTROLLED SYSTEM USING A SCENE LIGHT INTEGRATION LEVEL BASED ON A DETECTION OF THE AMBIENT LIGHT OF THE SCENE PRIOR TO THE EXPOSURE Granted FR2496908A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/218,448 US4306786A (en) 1980-12-19 1980-12-19 Photographic exposure control with scene light integration level determined as function of pre-exposure ambient scene light detect

Publications (2)

Publication Number Publication Date
FR2496908A1 FR2496908A1 (en) 1982-06-25
FR2496908B1 true FR2496908B1 (en) 1985-03-08

Family

ID=22815162

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8123776A Granted FR2496908A1 (en) 1980-12-19 1981-12-18 PHOTOGRAPHIC CAMERA PROVIDED WITH EXPOSURE CONTROLLED SYSTEM USING A SCENE LIGHT INTEGRATION LEVEL BASED ON A DETECTION OF THE AMBIENT LIGHT OF THE SCENE PRIOR TO THE EXPOSURE

Country Status (6)

Country Link
US (1) US4306786A (en)
JP (1) JPS57129424A (en)
CA (1) CA1165162A (en)
DE (1) DE3149012A1 (en)
FR (1) FR2496908A1 (en)
GB (1) GB2090006B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444478A (en) * 1982-11-16 1984-04-24 Polaroid Corporation Hybrid camera arrangement
US4445763A (en) * 1982-12-28 1984-05-01 Polaroid Corporation Hybrid camera arrangement
JPH06103373B2 (en) * 1984-03-01 1994-12-14 株式会社精工舎 Program Shutter
US4996551A (en) * 1989-02-20 1991-02-26 Fuji Photo Film Co., Ltd. Exposure control apparatus

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200723A (en) * 1963-03-29 1965-08-17 Polaroid Corp Shutter timing apparatus
US3620143A (en) * 1968-12-16 1971-11-16 Polaroid Corp Automatic exposure control system with fast linear response
JPS532567B2 (en) * 1972-09-20 1978-01-30
JPS5640809B2 (en) * 1973-04-03 1981-09-24
US3942183A (en) * 1974-07-02 1976-03-02 Polaroid Corporation Camera with pivoting blades
JPS515577A (en) * 1974-07-03 1976-01-17 Hitachi Ltd ONDOKAI HEIKI
DE2558253A1 (en) * 1975-01-02 1976-07-08 Polaroid Corp EXPOSURE CONTROL DEVICE FOR PHOTOGRAPHICAL APPARATUS
US4040172A (en) * 1975-05-01 1977-08-09 Kulite Semiconductor Products, Inc. Method of manufacturing integral transducer assemblies employing built-in pressure limiting
US4008481A (en) * 1975-10-03 1977-02-15 Polaroid Corporation Exposure control system with separate flash and ambient trigger levels
US4040072A (en) * 1976-01-13 1977-08-02 Polaroid Corporation Shutter latch arrangement releasable through shutter blade actuation and resettable through film advancement
US4147418A (en) * 1977-10-11 1979-04-03 Polaroid Corporation Photographic exposure control system with independent ambient and artificial illumination control modes
US4192587A (en) * 1978-11-13 1980-03-11 Polaroid Corporation Proportional fill flash

Also Published As

Publication number Publication date
FR2496908A1 (en) 1982-06-25
GB2090006B (en) 1984-10-17
DE3149012A1 (en) 1982-07-29
US4306786A (en) 1981-12-22
GB2090006A (en) 1982-06-30
JPS57129424A (en) 1982-08-11
CA1165162A (en) 1984-04-10

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Legal Events

Date Code Title Description
ST Notification of lapse